ok ok so trivia is a game with questions. ok so. mm. junna first of all. shes fucking smart i bet she prob knows basic latin or smth. (i love her) ok second uhh kaoruko she seems quick on her feet and also good with animals facts. kuro cause shes a nerd (canon) and bcs she looks like the gal who could be good at answering stuff. karen acc bcs she might look silly but shes like a sponge and prob knows 10000 random facts. and lastly nana bcs she prob played trivia on loops and knows the questions by heart.
IF NOT JUST SEISHO: junna from seisho. fumi for rinmeikan bcs i think shes a nerd. hisame from seiran cause shes smart and can talk well and is good at groupwork. from frontier aruru cause spongey like karen and also bcs she has shitton of luck. now it gets difficult bcs from siegfeld id say either yachiyo (kiddo read a lot i bet she knows shit) or michiru (good leader for group and is smart so can work well with finding answer)